Detail intimate - canvas Messenger bag shoulder bag laptop backpack Backpack style The comfortable strap system makes it easy and convenient to carry it on your back. Shoulder bag style When you use it as a shoulder bag, you can open a back pocket to hide the backpack's double shoulder straps, which include a detachable shoulder strap. Messenger bag style When you use it as a crossbody bag, you can open a back pocket to hide the backpack strap. More Upgraded Details! Interior space display Easily accept daily necessities, clothes, laptops, IPAD, mobile phones, etc. Articles are clearly partitioned and carefully classified. Luggage Belt Design Fits most luggage trolley models. When traveling, just put it in your suitcase to free your hands Zipper with real leather pull and lock ring All outside zippers are designed with a real zipper pull, and the main compartment zipper is designed with lock ring, you could use a lock to lock it. (notice: this bag doesn't come with a zipper lock)